is HOMOPTERA 



Geographical distri bution of species. — Oriental Region. 



i. P. ducalis. — PI. 2, Figs. I 3a, b, c. India. Burma, Cochin Chi- 



Polyneura ducalis, Westwood. Arcan. Ent. Vol. i, p. 92, t. 24. f. 2 1 1842). 11,1. Chineese Tibet. 



Division TACUARIA 



Tacuaria. Distant, Ann. Mag. Nat. Hist. (7), Vol. 14, p. 3oo (1904). 



Characters. — Lateral margins of the pronotum convex, but not angularly produced, some- 

 times simply moderately convex or anteriorly subampliated and somewhat toothed; tegmina and wings 

 more or less opaquely coloured : in one species, Tosena splendidula, Distant, the tegmina with hyaline 

 spaces. 



This division is represented in the Oriental and Malayan Regions, Formosa, China and Japan. 



SYNOPSIS OF GENERA 



A. Lateral margins of the pronotum somewhat convex, but even. 



a. Head {including eyes) equal in "width to that between anterior lateral angles 



of pronotum 1. Genus Tacua. 



b. Head (including eyes) narrower than width between anterior lateral angles 



of pronotum 2. Genus Graptopsaltria. 



B. Lateral margins of the pronotum anteriorly subampliated and somewhat toothed . 3. Genus Tosena. 



14. Genus TACUA, Amyot & Serville 



Tacua. Amyot & Serville, Hist. Hem. p. 461 (1843). 



Characters, — Body very* robust and somewhat long; head broad, truncate anteriorly, inclu- 

 ding eyes as broad as anterior lateral margins of pronotum; ocelli a little farther apart from eyes than 

 from each other; face broad and convex, but somewhat compressed; pronotum with the lateral margins 

 convex, but not prominently ampliated or laminately expanded; anterior femora distinctly and robustlv 

 spined ; metasternum centrally and longitudinally sulcate ; tympana covered; opercula long, extending 

 a little beyond the middle of abdomen, their margins subparallel and slightly overlapping at centre; 

 tegmina opaque, apical areas eight, interior ulnar area somewhat widened at apex; wings, excluding 

 margins, opaque. 



Type. — • T. speciosa, Illiger. 



Geographical distribution of species. — Malayan Region. 



1. T. speciosa. — PI. 3, Figs. 14a, b, c. Malaya. 



Tcttigonia speciosa, Illiger, in Wiedemann, Arch. Zool. Vol. 1, p. 145,38, t. 2 



( 1800). 

 Cicada indica, Donovan, Ins. Ind. Hem. t 2. (. 3 (i8oo-o3). 



15. Genus TOSENA, Amyot & Serville 



Tosena. Amyot & Serville, Hist. Hem. p. 462 (1843). 



Characters. — Head (including eyes) equal in width to base of mesonotum, about as long as 

 pronotum, front prominent but obliquely depressed, ocelli twice the distance from eyes as from each 



